This blog is intended to go along with Population: An Introduction to Concepts and Issues, by John R. Weeks, published by Cengage Learning. The latest edition is the 12th (it came out in 2015), but this blog is meant to complement any edition of the book by showing the way in which demographic issues are regularly in the news.

If you are a user of my textbook and would like to suggest a blog post idea, please email me at: john.weeks@sdsu.edu

In a recent study Erich Striessnig and Wolfgang Lutz, of the Vienna University of Economics and Business and the International Institute for Applied Systems Analysis in Laxenburg, Austria, argue that in predicting dependency ratios (the number of children and pensioners compared with people of working age), education should also be taken into account. And that makes optimal rates much lower than previously thought.

Not everyone of working age contributes equally to supporting the dependent population. Better-educated people are more productive and healthier, retire later and live longer. Education levels in most places have been rising and are likely to continue to do so. Using projections by age, sex and level of education for 195 countries, the demographers conclude that the highest welfare would follow from long-term fertility rates of 1.5-1.8. That excludes the effects of migration: for countries with many immigrants, the figure would be lower.

Educating more people to a higher level will be expensive, both because of the direct costs and because the better-educated start work later. But they will contribute more to the economy throughout their working lives and retire later, so the investment will pay off. Moreover, fewer people will help limit future climate change.

The Economist notes that this won't be an easy sell, however, no matter how hopeful it might sound for the future.

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Weeks Population Companion App

The app provides learning objectives and main points for each chapter, along with a quick POPquiz to test knowledge about key population information, and there is also a link to the WeeksPopulation blog.